Hole saw

Cutting by use of rotating axially moving tool – Tool or tool with support – Having axial – core-receiving central portion

Reexamination Certificate

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Details

C408S204000, C408S197000, C408S231000, C408S23900A

Reexamination Certificate

active

08079787

ABSTRACT:
A hole saw includes an arbor, a saw blade assembly having a saw blade and an adapter connected with the saw blade and provided with a protrusion received in an indentation of the arbor, a lid movably mounted on a body portion of the arbor and movable relative to the arbor between a first position where second coupling portions of the adapter are blocked by a block portion of the lid and coupled to first coupling portions of the arbor such that the saw blade assembly can't be rotatable relative to the arbor, and a second position where the second coupling portions of the adapter are staggered with the block portion and uncoupled from the first coupling portions of the arbor through the rotation of the saw blade assembly. Thus, the hole saw has the advantages of reducing vibration in use and convenience in assembly and disassembly works.

REFERENCES:
patent: 3064503 (1962-11-01), Fry
patent: 3647310 (1972-03-01), Morse
patent: 3784316 (1974-01-01), Bittern
patent: 4050842 (1977-09-01), Janin
patent: 4303357 (1981-12-01), Makar
patent: 4986690 (1991-01-01), Cooksey
patent: 5108235 (1992-04-01), Czyzewski
patent: 5407293 (1995-04-01), Crainich
patent: 6126359 (2000-10-01), Dittrich et al.
patent: 6254303 (2001-07-01), Falat et al.
patent: 6409436 (2002-06-01), Despres
patent: 6705807 (2004-03-01), Rudolph et al.
patent: 7073992 (2006-07-01), Korb et al.

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